In conclusion, the results indicate that the improved F6 and
F5 strains have lower FCR and thus are more efficient at utilizing
feed and growing better than the unimproved strain at
stocking densities of 5 fish/m3
. These results support recommended
Tilapia stocking densities that take into account
transport and handling related mortalities (Russell et al.,
2008) and should be practical for most small holder farmers
in Malawi.